Self-Determined Reciprocal Recommender System with Strong Privacy Guarantees

Research output: Contribution to book/Conference proceedings/Anthology/ReportConference contributionContributedpeer-review

Contributors

  • Saskia Nuñez von Voigt - (Author)
  • Erik Daniel - , Technical University of Berlin (Author)
  • Florian Tschorsch - , Technical University of Berlin (Author)

Abstract

Recommender systems are widely used. Usually, recommender systems are based on a centralized client-server architecture. However, this approach implies drawbacks regarding the privacy of users. In this paper, we propose a distributed reciprocal recommender system with strong, self-determined privacy guarantees, i.e., local differential privacy. More precisely, users randomize their profiles locally and exchange them via a peer-to-peer network. Recommendations are then computed and ranked locally by estimating similarities between profiles. We evaluate recommendation accuracy of a job recommender system and demonstrate that our method provides acceptable utility under strong privacy requirements.

Details

Original languageEnglish
Title of host publication16th International Conference on Availability, Reliability and Security, ARES 2021
ISBN (electronic)9781450390514
Publication statusPublished - Aug 2021
Peer-reviewedYes
Externally publishedYes

External IDs

Scopus 85113254546